135490 has 16 divisors (see below), whose sum is σ = 258552. Its totient is φ = 50944.

The previous prime is 135479. The next prime is 135497. The reversal of 135490 is 94531.

135490 = T₂₆ + T₂₇ + ... + T₉₃.

135490 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 4 ways, for example, as 121801 + 13689 = 349^2 + 117^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (135497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229 + ... + 568.

2¹³⁵⁴⁹⁰ is an apocalyptic number.

135490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135490 is a deficient number, since it is larger than the sum of its proper divisors (123062).

135490 is a wasteful number, since it uses less digits than its factorization.

135490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 135490 is about 368.0896629899. The cubic root of 135490 is about 51.3612692530.

It can be divided in two parts, 1354 and 90, that added together give a square (1444 = 38²).

The spelling of 135490 in words is "one hundred thirty-five thousand, four hundred ninety".